Swimming heats held at 2008 Summer Olympics in Beijing

USA's Matt Grevers swims the last leg of their world-record-setting Men's 4x100 Freestyle Relay Heat 1 at the National Aquatic Center (Water Cube) during the 2008 Summer Olympics in Beijing, China, on August 10, 2008. The Americans finished in 3:12.23. (UPI Photo/Roger L. Wollenberg)